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So for our VRF light game plan, let's do the following.

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Let's implement this topology with two VRFs,

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one for customer blue, one for customer green,

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including the use of tier one gateways for each of those

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and segments for each of those customers as well.

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So as part of that, we're going to need to clean up

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our existing topology.

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And then once it's all cleaned up from scratch,

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we need to go ahead and deploy our tier zero gateway.

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And that's this one right here.

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So that has to be in place.

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We also need to associate it with uplinks to talk to the
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We also need to associate it with uplinks to talk to the

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external routed environment.

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And then once we have that in place, we can then go ahead

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and start carving out individual VRFs for the additional

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customers that we have.

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So in our example, we're going to use two customers,

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the blue customer and the green customer.

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So for the T zero deployment, let's use an external segment

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with VLAN 21.

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And so on that segment, that external segment,

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we're going to use 10 dot 21 dot zero dot zero

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with a 24-bit mask.

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And then for the two edge nodes that will incorporate

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on that subnet, let's go ahead and use edge one at dot 61
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on that subnet, let's go ahead and use edge one at dot 61

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and edge two at dot 62.

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So once we have our T zero in place, we can then go ahead

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and create a T zero VRF and we'll start off with blue.

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So our next step will be to deploy the blue VRF.

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And for that one, for its connectivity up to the external

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network to the edge router, we're going to use VLAN 23

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and its IP dressing space is 23 dot 1 dot 2 dot zero

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with a 24-bit mask.

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And the default gateway up there is at dot 1.

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And once again, for edge one, we'll use dot 61
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And once again, for edge one, we'll use dot 61

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and for edge two, we'll use dot 62.

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And for simplicity, we're just putting one external router

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out here, but this would represent, for example,

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a top of rack router.

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And so in the production environment for fault tolerance,

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we'd have one of our edges go to one of our top of rack routers

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and the other edge going to the second router.

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But again, for simplicity, I'm just putting one external router

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out here to save us a bit of time during the configuration.

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So then once we have this blue VRF in place,

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we can then go ahead and create our blue tier one gateway.

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So that'll be right here.

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So once that's in place, we can create our segment
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So once that's in place, we can create our segment

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and then finally go ahead and test.

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So here's what I propose we do.

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We'll do all these step by step for the benefit of getting

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the initial tier zero gateway up and running

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and the blue VRF and the blue tier one and the network segment here.

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And then once we do all of that, it's simply a repeat process

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for doing it once again for our second VRF,

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which is going to be the green VRF.

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So effectively, we just logically repeat this process.

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So for the green VRF, the only difference would be

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instead of using VLAN 23 is we're going to be using over here

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for blue.
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for blue.

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Let's use VLAN 24 over here for the green.

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And then for the tier zero gateway, we're going to be using VLAN 21.

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So for the blue customer, let me go ahead and put this as 23.1.2.0

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with a 24-bit mask.

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And when we get to green for the VLAN 24 connection,

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that'll be 24.1.2.0 with a 24-bit mask.

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And in all cases, the external router on those three VLANs is at dot one.

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And it just occurred to me that if we go through all this for blue

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and then we also as validation do it again for green,

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that might take quite a bit of time.
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that might take quite a bit of time.

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So as a preemptive step, I'm going to go ahead and off camera.

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I'm going to simply remove all of our existing tier zero and tier one

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gateways that we currently have.

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So I'll take care of that on my own.

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So our next logical step together then would be as part of our game plan

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to go ahead and start the initial deployment of our tier zero gateway.

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And we'll do that in the next video.

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